參數(shù)資料
型號: M37560ME-XXXFP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機
文件頁數(shù): 28/65頁
文件大?。?/td> 955K
代理商: M37560ME-XXXFP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
7560 Group
28
SERIAL I/O
Serial I/O1
Serial I/O1 can be used as either clock synchronous or asynchro-
nous (UART) serial I/O. A dedicated timer (baud rate generator) is
also provided for baud rate generation.
(1) Clock Synchronous Serial I/O Mode
Clock synchronous serial I/O mode can be selected by setting the
mode selection bit of the serial I/O1 control register to
1
.
For clock synchronous serial I/O1, the transmitter and the receiver
must use the same clock. If an internal clock is used, transfer is
started by a write signal to the TB/RB (address 0018
16
).
Fig. 23 Block diagram of clock synchronous serial I/O1
Fig. 24 Operation of clock synchronous serial I/O1 function
P
4
6
/
S
C
L
K
1
P4
7
/S
RDY1
P
4
4
/
R
X
D
P
4
5
/
T
X
D
X
I
N
1/4
1
/
4
F/F
Serial I/O1 status register
S
e
r
i
a
l
I
/
O
1
c
o
n
t
r
o
l
r
e
g
i
s
t
e
r
Receive buffer register
Address 0018
16
R
e
c
e
i
v
e
s
h
i
f
t
r
e
g
h
i
s
t
e
r
Receive buffer full flag (RBF)
R
e
c
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i
v
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i
n
t
e
r
r
u
p
t
r
e
q
u
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s
t
(
R
I
)
Clock control circuit
S
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1
/
(
n
+
1
)
Baud rate generator
A
d
d
r
e
s
s
0
0
1
C
1
6
BRG count source selection bit
C
l
o
c
k
c
o
n
t
r
o
l
c
i
r
c
u
i
t
Falling-edge detector
D
a
t
a
b
u
s
A
d
d
r
e
s
s
0
0
1
8
1
6
Shift clock
Transmit shift register shift completion flag (TSC)
Transmit interrupt source selection bit
Transmit buffer empty flag (TBE)
Address 0019
16
T
r
a
n
s
m
i
t
i
n
t
e
r
r
u
p
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e
q
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t
(
T
I
)
D
a
t
a
b
u
s
A
d
d
r
e
s
s
0
0
1
A
1
6
Transmit buffer register (TB)
Transmit shift register
R
e
c
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i
v
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e
n
a
b
l
e
s
i
g
n
a
l
S
R
D
Y
1
D
7
D
0
D
1
D
2
D
3
D
4
D
5
D
6
RBF = 1
TSC = 1
e
r
r
u
n
t
e
c
t
i
o
TBE = 0
T
T
B
S
E
C
=
=
1
0
Transfer shift clock
(1/2 to 1/2048 of the internal
clock, or an external clock)
e
r
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t
p
u
t
T
X
D
S
e
r
i
a
l
i
n
p
u
t
R
X
D
Write signal to receive/transmit
buffer register (address 0018
16
)
O
d
v
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n
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r
r
o
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(
O
E
)
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s 1
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